add method body follow makeVector/cachemean

Author: bbbush

cachematrix.R

@@ -1,15 +1,29 @@
-## Put comments here that give an overall description of what your
-## functions do
+## Below are two functions that are used to create a special object that stores a matrix and caches its inverse
 
-## Write a short comment describing this function
+## Create a list of function to set/get the matrix, and set/get the inverse
 
 makeCacheMatrix <- function(x = matrix()) {
-
+  i <- NULL
+  set <- function(y) {
+    x <<- y
+    i <<- NULL
+  }
+  get <- function() x
+  seti <- function(v) i <<- v
+  geti <- function() i
+  list(set = set, get = get,
+       seti = seti,
+       geti = geti)
 }
 
 
-## Write a short comment describing this function
+## Calculate the inverse of matrix and store to cache
 
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+  i <- x$geti()
+  if(!is.null(i)) i
+  data <- x$get()
+  i <- solve(data,...)
+  x$seti(i)
+  i
 }